Work supporting and rotating means for wrapping machines



Nov. 22, 1927.

J.- DERRY WORK SUPPORTING AND ROTATING MEANS FOR WRAPPINGMACHINES a 7 F n u, w v/ w T.. M. 5 WIN R w v. n/ u m M w 3 \l w.

u m V/ \1 .F b F Nov. 22, 1927.

J. DERRY WORK SUPPORTING AND ROTATING MEANS FOR WRAPPING MACHINES Filed May 11. 1925 3 Sheets-Sheet 2 Nov. 22, 1927. 1,650,199

J. DERRY PPORTING AND ROTATING MEANS FOR WRAPPING MACHINES Filed May 11, 1925 3 Sheets-Sheet 3 ATTURNEYFL' Patented Nov. 22, 1927.

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OF BOSTON, MASSACHUSETTS.

wnnx surron'rnvo AND ROTATING Application filed may 11,

This invention relates to wrapping machines of the general type shown and described in an application for Letters Patent of George W. Prouty, Serial No. 479,410, filed June 21, 1921 adapted primarily for wrapping annular objects such, for example, as automobile tires, coils of wire, etc.

The present invention has for its object to provide a wrapping machine of this charac- 5110 ter, and more particularly a machine for wrapping automobile tires with paperhaving improved mechanism for supporting and rotating the tire during thewrapping operation. The improved mechanism constituting the subject matter of the present invention comprises improved supporting and driving rollers including the mountings for the rollers and the novel means by which the rollers are rotated in unison. Due to the novel arrangement and construction of my supporting and rotating rollers, the said rollers will rotate tires of different sizes through the shuttle at the same rate of speed. The invention will be fully understood 25 from the following description when taken in connection with the accompanying drawin'gs and the novel features thereof will be pointed out and clearly defined in the claims at the close of this specification.

In said drawings:

Fig. 1 is a front elevation of a tire wrapping machine embodying my'invention. Fig. 2 is a side elevation of the machine looking from the left in Fig. 1 and'showing the mountings for both pairs of supporting. and rotating rollers.

Fig. 3 is an enlarged front elevation partly in section of .m improved supporting and rotating rollers including their mountings and operating mechanism.

' Fig. 4 is a sectional view of one pair of the supporting and rotating rollers and their driving pinion all of which are shown out ofengagement so as to clearly illustrate the construction thereof.

The frame of the machine comprises' a base 15 and a yoke 16 which is pivotally mounted on a shaft 17 journalled. in an u right 18 risin from the .base 15. The yo e 50 shuttle 20 which is rotated by a driving member in the form ofa friction disk 21, secured to the shaft 17 and driven throu 11 connections hereinafter described; under -t e strip being fed from the shuttle 16 is provide with guide rollers 19 for the nane Ion wnarrme Enema.

1925. Serial no. 29348.

control of a starting treadle 22and an -electric motor 23 supported on the base 15'. The.

tire to be wrapped is held by a weighted roller 14 upon the two pairs of supportin and rotating rollers 24 which are arranged on opposite sides of the shuttle 20 and are driven through a connection generally indicated at 25 from the motor 23, the arrangement being such that the tire W will be turned relatively slowly with respect to the speed of rotation of the shuttle 20. The shuttle 20 is an open shuttle, a portionv of the same being cut away to provide an opening thropgh which the tire W may be inserted. The yoke 16 may be adjusted about the fixed axis of the shaft 17 to centre the shuttle 20 with respect to tires of different sizes, said yoke being counterbalanced by a spring 27 and being located in adjusted position by means of a clamp 28 carried by an upright 29 rising from the base 15.

.The wrapping material is preferably in the form of a continuous strip S of paper and 1s suppliedifrom a roll 30 supported by a reel or spindle 31 carried by the yoke 16. Said paper passes from the roll 30 to any suitable tension devicenot shown, thence through a folding device generally indicated at 33 and thence over a guide plate 34 to the shuttle 20. The shuttle 20 com rises an annulus having on. one face a circuliir series of rollers 35 about which the strip S is wrapped when the shuttle is rotated, said about .a roller 36 to the tire W. Between the shuttle 20 and the. source of supply, there is-provided .avcuttin mechanism comprisin a knife 37 cooperating with a portion of t e ard plate 34 to sever the strip S when a dent length thereof has been wound around the shuttle rollers 35 to complete the wrapping of the tire W. The knife .37 is automatlcally actuated after apredetermined number of rotations. of the driving disk 21 b a counting mechanism 38 actuated at eac rotation of the driving disk by a cam projection 39 thereon, said counting mechanism being manually adjustable in accordance with the size of the articles wrapped. The above described cutting mechanism for the pa er web forms no partof the resent invention it being understood that t e roll of wrapping material may be mounted on the shuttie and no cutting mechanism used.

In accordance with the present invention the supporting and driving rollers 24 are located in pairs on opposite sides-of the shuttle 20. As hown in Fig. 2, the pair of supporting roller 4 to the left in this figure are mounted on a standard 40 which extends at an angle above the base 15 the said standard leaning toward the shuttle 20. The right hand pair of rollers 24 are carried on the vertical standard 41 also mounted on the base 15. The tire W is supported on the two pairs of rollers24 on opposite sides of the shuttle and is rotated through the eye of the shuttle in the direction of the arrow in Fig. 2.

he rollers 24 of each pair are supported on stub shafts 42, the shafts 42 being seis provided at its opposite end rollers 42 are provided with extensions on short teeth on the gear teeth on the out only approximate gear 61 on the lower end faces thereof in the form of bevel gears 61. The teeth 62 of the bevel gear 61 on the roller 24 to the left in Figs. 3 and 4 extend throughout 'the entire face of the gear while the teeth 63 on the'roller 24 to the right in these fi ures extend through- V y half of the bevel face of the gear, the length of theteeth beingapproximately half of that of the teeth on the left hand roller 24, and located on the face of the gear nearestthe centre of the roller. The rollers 24 are adjusted on their supportin' member 40 and 41 so that the teeth of t e bevel gears are maintained in proper mesh. The gear. 61 on the left hand roller is driven by the bevel gear 52 on the upper end ofthe shaft 46 journalled in the cross members 47 and 48 of the supporting brackets 40 and 41. The bevel gear 52 is of the same size as the bevel gears 61 on the end faces of the rollers 24 and as in the case of the bevel gear on the right hand roller 24has ear-teeth which are only approximately alf the length of the teeth on the bevel gear 61 of the left-hand roller 24. The

teeth on the gear 52 extend from the outer edge of the gear to. a point approximately at the centre of the gear face instead of from the centre to the inner edge as in the case of the gear on the right-hand roller 24. By this constructiomit will beseen that the 52 drive the bevel gear 61 onthe left-hand rollers 24 and the of full lengt drive the short teeth of the the right-hand roller 24. The

The said shafts are secured ear 61 of the sapidrollerbeing half length teeth on both the ri ht-hand roller 24 and the driving gear 52, heing on opposite sides of their respective gear faces, clear each other. This construction permits the triangular driving arrangement of the three bevel gears enabling the inclined rollers 42't0 be positively driven in unison by a single driving car. It will be understood that the foregoing description of the rollrs 24 on the right-hand side of the shuttle applies equally tothe other pair of rollers 24, the supporting bracket 41 of the righthand pair of rollers being provided with a like driving shaft 46 having a like pinion 52 on its upper end. Each of the shafts 46 are driven through bevel gears 49 secured to their lower ends which mesh with bevel cars 50 on the transverse shafts 51 and 54 yournalled in the standards 40 and 41 respectively. The driving shaft 54 is connected to the motor generally indicated as 25. Theshaft 51 carries a sprocket 53 and the shaft '54 is provided with a like sprocket 55. A chain 56 connects the sprockets 53 and 55 so that both pairs of rollers 24 are driven at the same rate of speed from the motor 23.

From the above described construction and arrangement of the supporting and rotating mechanism, it will readily be seen that the surface speed of the entire peripheral surfaces of each of the rollers 24 is the same. It is therefore clear that tires ofdifferent sizes havingdifl'erent cross sectional areas will be rotated at'the same rate of speed through the eye of the shuttle irrespective of the points at which they engage with the said surfaces of these rollers. Thus a small. tire which will pass farther down in the V-shaped recess between the rollers will be driven at the same speed as a large tire which will rest on the roller surfaces at points farther out. This construction is a distinct improvement over the old type of supporting mechanism in which the tires were supported on one roller on each side of the shuttle. These rollers were provided with outwardly extending flanges the surface speed of which would be different at the points of engagement on the said flanges of tires of different sizes.

Asclearly appears from Fig. 2'and as referred to above, the standard 40 which car'- ries the left-hand" pair of supporting rollers 24 is inclined inwardly from the base 15 toward the shuttle 20 while the standard 41 23 through the connections.

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which carries the other rollers .24 is vertical Flg. 2 the feeding-in side is that at the lle ftin' 'Fi g'. 2 To draw the tire in from the left and feed it through-the shuttle 20 all four rollers 24, of both.pairs, are driven,

clockwise, being the. direction of the arrows 6 in 2; It will be readily understood .that.

when an pair of rollers, such as the rollers 24, which are inclined with respect to each other and have their axis in the same'plane are driven togetherand in the same direc- 10 tion, .any object which is brought in contact with either or both of the rollers will-eitherbe drawh by the rollers into the V-shape recess. between "them or will be forced to climb -out of this recess, depending on which side v of-the, common plane of the axes of the rollers the objectengagesthe vroller surfaces,

' and further dependingonltheir directidnofy rotation. This can best be .illustra-ted'by 7 24; in this'manner, e.,to the left of the plane of their axes, it is necessary to'incline the rollers toward the shuttle. This has been done in the machine shown by inclining'the bracket 4011s described but it is apparent that the position of the rollers themselves.

. may be changed without inclining the bracket.

It has been found sufficient for practical p'u'r' oses in-order' to overcome-enough of the the tire" out of the V-shape'd recess toincline ten ency of the left-hand rollers 24.to force the said rollers a lesser amount thanthat shown in Fig. 2. For example, the tire will feed satisfactorily without climbing out of 4 the V-shaped recess ifthe plane of the axes engagement of e tire -.with the rollers or even if the said plane is slightly to the left of the said polnts of en agement. The satisfactory, operation 'whic results 'when the said plane is slightly to the left of the pointsof engagement is perhaps due to the weight of the tire, the weighted roller 14 in the said recess.

It will be a parent thateach degree of in- -.clination of t e left hand rollers 24'- to the right ofthe vertical reduces the tendency of the tire to climb out of the V-shape recess but unless theiinclination is. as eat as-that described above auxiliary will be necessary to maintain the tire: in driving. sition' on the rollers.

. It wil be understood that I do not limit myself to'the particular arrangement and application of the invention describedand s own,

illustrative purposes merely, and that the said invention, as defined by the claims here- 'terial about the work passed therethrou 'h same through said shuttle. at the same rate of speed.

-'ticles, in combination, an annular shuttle .of the rollers 24p1asses through the points of and to the drawin 'power of the ri 'ht-hand v rollers 24; all of ilica tend, to 1101 the tire I 1 passing through the work and means for Tsubstantially cylindrical ro lers having ,gularly disposed intersecting axes, inter-- iding means y the samehaving been chosen for untoappended ma be otherwise'embodied and use without eparture from its spirit and scope.

-Having thus described my invention, I claim x 1 1. In; a wra ping machine for annular articles in com ination, an annular slfiittle provided with means for wrapping a strip of 'wrappin material about the work passe therethroug and-means for supporting ann'ular articlesof different sizes in upright position and rotating the same through said shuttle at thesame rate of speed, said su 'porting and rotating'means engaging ,t e

work at a pluralit of points at o osite sides of the median line of its periphgi y.

'2. In a tire wrapping machine, in combination, an annular shuttle provided with means for wrapping a strip of wrapping maand means engaging the tire at a plurality 'ofpoigts at opposite sides of the median line of the tread for supporting tires of different sizes 'in upright position and rotating the 3. Work supporting and rotating means for wrapping machines comprising a pair of rollers having angularly dis osed axes intersecting in a plane perpen icular to the axis of the Work and passing through the work, and means for rotating said rollers in unison.

4. 'In a wrapping machine for annular arprovided with means for wrapping a strip of Wrappingl material about the Work passed and means for supporting the c therethroug work and moving the same .tirough. said shuttle, said last named means comprisin two'pairs of rollers on opposite sides of said shuttle,- the rollers of each pair being opositely and upwardly inclined and means or rotating the rollers together in the same direction. I

.5'. Work supporting and rotating means for wrapping'machines com rising a pair of substantially cylindrical rollers having angularly disposed axes intersecting in a plane perpendicular to-the axis of the work and rotating said rollers in unison.

I 6. Work supporting and rotating means for wrapping machines com rising a pair of an meshingbevel gears carried said rollers respectively, and a third bevel gear meshing with one of said first named gears to drive the same. I J

7. .Work supporting and rotating means for wrappingmachines comprising a pair of substantially cylindrical/rollers having angularly disposed intersecting axes inter- I meshing bevel gears carried by saidlrollers respectively, and a third bevel gear meshing with one of said first named gears to drive the same, the other of said first=named gears and said third gear being cutaway at different points-to clear .one another.

8. Workrshpporting and rotating means for wrapping machines comprising a pair of interconnectedsubstantially cylindrical rollers the axes of which are angularly disposed and lie in a; common plane, and

forming a V.-shaped recess betweenv the said rollers.

9. In a wrapping machine for annular articles, in combination, an annular shuttle and two pairs of interconnected rollers on opposite sides of .said shuttle, the axes of each pair being angularly disposed and ly-, ing in a common plane providinga V-shaped recess therebetween to receive the article to be wrapped and support. and rotate the same.

10. In a wrapping machine for annular articles, means for supporting the article to be wrapped in upright position and for rotating the same comprising oppositely and upwardly inclined rollers the axes of which lie in a common plane providing a V-shaped carriage to receive the article to be wrapped.

11. In a wrapping machine, in combination, an annular shuttle provided with means for wrapping a' strip of wrapping material about the work passed therethrough,

passed theret ough and means for support-' in the work and moving the same through said shuttle, said last named means com-,

prising a pair of oppositely and upwardly inclined rollers the axes of which lie in a common plane providing a V-shaped recess between thesaid rollers and means for rotating the rollers together in the same direc-. tion the said rollers being so positioned that the work engages therewith at points on the rollers on that side of the common plane of their axes fl'OlllWlllCll said work approaches I the said V-shaped recess.

13. In a wrapping machine for annular articles, in combination, an annular shut-' tle provided with means for wrapping a strip of wrapping material about the worliv passed therethrough and means for supporting the work and moving the same through said shuttle, said last named means comprising two pairs of rollers on opposite sides V of said shuttle, the rollers of each pair .being oppositely and upwardly inclined andhavmg their axes in a common plane provid ing a V-shaped recess between the said roll-.

ers, and means for'rotating said rollers-together in the same direction, the said rollers being positioned on the machine so that the work engages the rollers of each pair at points on that side of the commonplane of their axes from which said workapproaches the said V.-shaped recess.

14. In a machine for wrappingv annular articles, means for supporting an article in upright position and rotating the same comprising a pair of oppositel and upwardly inclined rollers and means or rotating said rollers in. unison.

. g 1 8'0 15. In a machine' for wrapping annular articles, means for supporting an article in upright position comprising a pair of rollers having intersectin axes upwardly and oppositely inclined with respect to the plane.

of the article supported, and means for rotating said rollers in. unison and thereby rotating said article. I In testimony whereof I 'affix my signature. a r

JASPER DERR Y. 

